Re: sb-thread:make-thread sets thread's package to CL-USER

(sb-ext:symbol-global-value '*package*) both in parent thread
and new thread return #<PACKAGE "COMMON-LISP-USER">

Thank you for the pointer to the manual – I think, this explains what I am
seeing:
"threads do not inherit dynamic bindings from the parent thread"



On Wed, Jun 12, 2024 at 5:14 PM Michał "phoe" Herda via Sbcl-help <
[email protected]> wrote:

> What does (sb-ext:symbol-global-value '*package*) return in your REPL? Is
> it consistent with what https://www.sbcl.org/manual/#Special-Variables
> says?
> On 12.06.2024 22:58, Raimondas K. wrote:
>
> The *package* value in the new thread is not NIL and not what was in the
> calling thread,
> so the question whether the binding was not retained or set to an
> unexpected value
> is not as interesting as what the behaviour should be, logically.
>
>
> On Wed, Jun 12, 2024 at 4:41 PM Stas Boukarev <[email protected]> wrote:
>
>> It doesn't set anything, it just doesn't retain your binding of *pacakge*
>> at the time of calling make-thread.
>>
>> On Wed, Jun 12, 2024 at 11:37 PM Raimondas K. <[email protected]> wrote:
>>
>>> I don't see this explicitly documented either way,
>>> but it looks that, empirically, the *package* inside the
>>> newly created thread is set to COMMON-LISP-USER.
>>>
>>> To demonstrate
>>> (defpackage :my (:use :cl))
>>> (in-package :my)
>>>
>>> (defun test ()
>>>   (format *standard-output* "in TEST thread: package ~a~%" *package*))
>>>
>>> (format *standard-output* "in MAIN thread: package ~a~%" *package*)
>>>
>>> (sb-thread:make-thread #'test
>>>                          :arguments '()
>>>                          :name "test")
>>>
>>> SBCL 2.3.2 prints out
>>> in MAIN thread: package #<PACKAGE "MY">
>>> in TEST thread: package #<PACKAGE "COMMON-LISP-USER">
>>>
>>> Not sure if this is how it is supposed to work; I find this
>>> behaviour counterintuitive, c/w for instance, with (load "file").
>>>
>>>    =R.
>>>
>>>
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>>
>
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